Control de Vibraciones en Maquinaria Rotatoria

Abstract

Vibration caused by mass imbalance is a common problem in rotating machinery. In this paper, a review of the performed research work on active balancing and active vibration control for rotating machinery is presented. In addition, two solutions to this vibration attenuation problem for desired output feedback trajectory tracking tasks are proposed. The first one consists in the use of a movable bearing to modify the effective rotor length and, as an immediate consequence, the natural frequency, to avoid the higher amplitudes presented in the resonance. The second one consists in the use of an active disk mounted on the main inertia of the rotor system, which contains a balancing mass that can be positioned in any angular and radial position inside the disk to attenuate the vibration caused by the residual unbalance. Since both active vibration control strategies require information of the eccentricity, the algebraic identification method is used for the on-line estimation of its parameters.